The Toyota Technical Center in York Township near Ann Arbor was the company’s only U.S. branch spared from relocation, as the automaker announced today that it will consolidate its national headquarters to Plano, Texas.

Toyota said that the relocation of its U.S. headquarters would coincide with an expansion of the York Township technical center. The expansion will accommodate the relocation of direct procurement from Erlanger, Ky., and bring about 250 employees to the region.

The Toyota Technical Center currently has more than 1,100 people employees at its campus.

About 4,000 employees nationwide will be affected by the consolidation. Toyota said that it will begin to make small moves this summer, but the majority of these employees will not move until construction of Toyota’s new headquarters is completed in late 2016 or early 2017.

“With our major North American business affiliates and leaders together in one location for the first time, we will be better equipped to speed decision making, share best practices, and leverage the combined strength of our employees,” Jim Lentz, the CEO of Toyota’s North American Region, said in a statement.

“This is the most significant change we’ve made to our North American operations in the past 50 years, and we are excited for what the future holds.”

Within the next three years, Toyota’s three separate North American headquarters for manufacturing, sales and marketing, and corporate operations will relocate to the single, state-of-the-art campus in Plano. Toyota’s North American finance arm also plans to move its headquarters to this new, shared campus.

Toyota Financial Services is not expected to transition to Plano from its current headquarters in Torrance, Calif., until 2017.

The Toyota Technical Center opened its 155,000-square-foot York Township facility in 2008 after acquiring 690 acres from the state of Michigan in 2005.